/Engine/Plugins/Runtime/Metasound/Source/MetasoundGraphCore/Public/MetasoundVariableNodes.h
Variable nodes initialize variable values. The output of a VariableNode is aTVariable.
template<typename [DataType](API\Plugins\OptimusCore\DataType)> class TVariableNode : public [Metasound::FNode](API\Plugins\MetasoundGraphCore\FNode)